/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:36:53,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:36:53,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:36:53,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:36:53,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:36:53,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:36:53,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:36:53,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:36:53,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:36:53,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:36:53,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:36:53,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:36:53,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:36:53,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:36:53,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:36:53,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:36:53,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:36:53,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:36:53,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:36:53,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:36:53,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:36:53,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:36:53,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:36:53,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:36:53,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:36:53,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:36:53,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:36:53,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:36:53,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:36:53,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:36:53,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:36:53,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:36:53,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:36:53,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:36:53,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:36:53,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:36:53,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:36:53,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:36:53,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:36:53,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:36:53,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:36:53,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 03:36:53,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:36:53,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:36:53,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:36:53,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:36:53,597 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:36:53,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:36:53,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:36:53,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:36:53,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:36:53,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:36:53,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:36:53,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:36:53,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:36:53,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:36:53,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:36:53,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:36:53,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:36:53,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:36:53,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:36:53,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:36:53,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:36:53,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:36:53,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:36:53,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:36:53,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:36:53,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:36:53,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:36:53,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:36:53,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:36:53,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:36:53,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:36:53,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:36:53,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:36:53,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:36:53,926 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:36:53,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-22 03:36:54,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeda07872/efca98125bf84a3795462715f6149936/FLAG1ff581422 [2020-08-22 03:36:54,530 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:36:54,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-22 03:36:54,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeda07872/efca98125bf84a3795462715f6149936/FLAG1ff581422 [2020-08-22 03:36:54,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeda07872/efca98125bf84a3795462715f6149936 [2020-08-22 03:36:54,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:36:54,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:36:54,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:36:54,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:36:54,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:36:54,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:36:54" (1/1) ... [2020-08-22 03:36:54,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:54, skipping insertion in model container [2020-08-22 03:36:54,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:36:54" (1/1) ... [2020-08-22 03:36:54,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:36:54,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:36:55,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:36:55,478 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:36:55,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:36:55,589 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:36:55,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55 WrapperNode [2020-08-22 03:36:55,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:36:55,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:36:55,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:36:55,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:36:55,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... [2020-08-22 03:36:55,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:36:55,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:36:55,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:36:55,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:36:55,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:36:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:36:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:36:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:36:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:36:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:36:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:36:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:36:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:36:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:36:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:36:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:36:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:36:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:36:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:36:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:36:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:36:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:36:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:36:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:36:55,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:36:55,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:36:55,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:36:55,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:36:55,761 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:36:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:36:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:36:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:36:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:36:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:36:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:36:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:36:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:36:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:36:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:36:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:36:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:36:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:36:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:36:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:36:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:36:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:36:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:36:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:36:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:36:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:36:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:36:56,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:36:56,878 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:36:56,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:36:56 BoogieIcfgContainer [2020-08-22 03:36:56,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:36:56,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:36:56,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:36:56,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:36:56,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:36:54" (1/3) ... [2020-08-22 03:36:56,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644e675b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:36:56, skipping insertion in model container [2020-08-22 03:36:56,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:55" (2/3) ... [2020-08-22 03:36:56,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644e675b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:36:56, skipping insertion in model container [2020-08-22 03:36:56,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:36:56" (3/3) ... [2020-08-22 03:36:56,892 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-22 03:36:56,903 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:36:56,911 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:36:56,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:36:56,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:36:56,956 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:36:56,956 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:36:56,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:36:56,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:36:56,957 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:36:56,957 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:36:56,957 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:36:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 03:36:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:36:56,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:56,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:36:56,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:56,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-22 03:36:57,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:57,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722708020] [2020-08-22 03:36:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,750 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:36:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:36:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:57,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722708020] [2020-08-22 03:36:57,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:57,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:36:57,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342405053] [2020-08-22 03:36:57,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:36:57,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:36:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:36:57,884 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-22 03:36:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:59,000 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-22 03:36:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:36:59,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:36:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:59,017 INFO L225 Difference]: With dead ends: 295 [2020-08-22 03:36:59,017 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 03:36:59,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:36:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 03:36:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-22 03:36:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 03:36:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-22 03:36:59,109 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-22 03:36:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:59,110 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-22 03:36:59,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:36:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-22 03:36:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:36:59,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:59,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:36:59,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:36:59,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:59,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-22 03:36:59,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:59,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089394905] [2020-08-22 03:36:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,436 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:36:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:36:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:59,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089394905] [2020-08-22 03:36:59,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:59,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:36:59,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615104766] [2020-08-22 03:36:59,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:36:59,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:59,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:36:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:36:59,483 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-22 03:36:59,908 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:00,645 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-22 03:37:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:37:00,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:37:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:00,649 INFO L225 Difference]: With dead ends: 219 [2020-08-22 03:37:00,649 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 03:37:00,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:37:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 03:37:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-22 03:37:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 03:37:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-22 03:37:00,695 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-22 03:37:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:00,696 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-22 03:37:00,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:37:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-22 03:37:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:37:00,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:00,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:00,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:37:00,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-22 03:37:00,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:00,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636978214] [2020-08-22 03:37:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,092 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:37:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:37:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:01,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636978214] [2020-08-22 03:37:01,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:01,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:37:01,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654663872] [2020-08-22 03:37:01,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:37:01,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:01,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:37:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:37:01,173 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-22 03:37:01,607 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:01,895 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:02,157 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:02,384 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:03,109 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:04,652 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-22 03:37:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:37:04,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 03:37:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:04,658 INFO L225 Difference]: With dead ends: 403 [2020-08-22 03:37:04,658 INFO L226 Difference]: Without dead ends: 310 [2020-08-22 03:37:04,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:37:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-22 03:37:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-22 03:37:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 03:37:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-22 03:37:04,730 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-22 03:37:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:04,730 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-22 03:37:04,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:37:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-22 03:37:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:37:04,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:04,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:04,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:37:04,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:04,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:04,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-22 03:37:04,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:04,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487372020] [2020-08-22 03:37:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,002 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:37:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:37:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:37:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:05,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487372020] [2020-08-22 03:37:05,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:05,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:37:05,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927791986] [2020-08-22 03:37:05,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:37:05,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:05,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:37:05,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:37:05,103 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-22 03:37:05,491 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:06,622 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:06,926 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:07,179 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:07,413 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:07,766 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:08,754 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-22 03:37:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:37:08,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 03:37:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:08,769 INFO L225 Difference]: With dead ends: 778 [2020-08-22 03:37:08,769 INFO L226 Difference]: Without dead ends: 562 [2020-08-22 03:37:08,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:37:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-22 03:37:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-22 03:37:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-22 03:37:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-22 03:37:08,882 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-22 03:37:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:08,882 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-22 03:37:08,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:37:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-22 03:37:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:37:08,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:08,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:08,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:37:08,885 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:08,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-22 03:37:08,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:08,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361064839] [2020-08-22 03:37:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,217 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:37:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 03:37:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:37:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:09,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361064839] [2020-08-22 03:37:09,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:09,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:37:09,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86681520] [2020-08-22 03:37:09,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:09,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:09,339 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-22 03:37:09,851 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:10,801 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:11,119 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:11,384 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:12,017 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:12,297 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:13,092 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-22 03:37:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 03:37:13,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 03:37:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:13,105 INFO L225 Difference]: With dead ends: 1224 [2020-08-22 03:37:13,105 INFO L226 Difference]: Without dead ends: 813 [2020-08-22 03:37:13,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:37:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-22 03:37:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-22 03:37:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-22 03:37:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-22 03:37:13,227 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-22 03:37:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:13,228 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-22 03:37:13,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-22 03:37:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 03:37:13,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:13,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:13,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:37:13,232 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:13,233 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-22 03:37:13,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:13,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099118849] [2020-08-22 03:37:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,491 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 03:37:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:37:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:37:13,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099118849] [2020-08-22 03:37:13,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:13,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:37:13,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172604784] [2020-08-22 03:37:13,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:13,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:13,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:13,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:13,658 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-22 03:37:14,212 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:15,063 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:15,311 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:37:15,573 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:15,867 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:37:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:17,599 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-22 03:37:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:37:17,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 03:37:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:17,611 INFO L225 Difference]: With dead ends: 2244 [2020-08-22 03:37:17,611 INFO L226 Difference]: Without dead ends: 1613 [2020-08-22 03:37:17,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:37:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-22 03:37:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-22 03:37:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-22 03:37:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-22 03:37:17,854 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-22 03:37:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:17,855 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-22 03:37:17,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-22 03:37:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 03:37:17,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:17,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:17,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:37:17,860 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-22 03:37:17,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:17,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853021735] [2020-08-22 03:37:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,088 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:18,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 03:37:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:37:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:37:18,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853021735] [2020-08-22 03:37:18,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:18,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:37:18,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273229941] [2020-08-22 03:37:18,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:18,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:18,257 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-22 03:37:19,341 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:19,618 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:37:19,878 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:20,125 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:21,422 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-22 03:37:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:37:21,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 03:37:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:21,435 INFO L225 Difference]: With dead ends: 2857 [2020-08-22 03:37:21,435 INFO L226 Difference]: Without dead ends: 1642 [2020-08-22 03:37:21,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:37:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-22 03:37:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-22 03:37:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 03:37:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-22 03:37:21,765 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-22 03:37:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:21,766 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-22 03:37:21,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-22 03:37:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 03:37:21,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:21,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:21,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:37:21,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-22 03:37:21,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:21,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969673540] [2020-08-22 03:37:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,120 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:22,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 03:37:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 03:37:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:37:22,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969673540] [2020-08-22 03:37:22,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:22,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:37:22,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690454628] [2020-08-22 03:37:22,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:37:22,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:22,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:37:22,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:37:22,261 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-22 03:37:23,056 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:23,330 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:23,560 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:24,187 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:24,436 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:24,663 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:25,755 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-22 03:37:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:37:25,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 03:37:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:25,765 INFO L225 Difference]: With dead ends: 2491 [2020-08-22 03:37:25,765 INFO L226 Difference]: Without dead ends: 1236 [2020-08-22 03:37:25,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:37:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-22 03:37:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-22 03:37:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-22 03:37:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-22 03:37:25,960 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-22 03:37:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:25,961 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-22 03:37:25,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:37:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-22 03:37:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 03:37:25,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:25,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:25,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:37:25,965 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:25,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-22 03:37:25,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:25,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326819060] [2020-08-22 03:37:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,267 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:37:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:37:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:37:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 03:37:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 03:37:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 03:37:26,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326819060] [2020-08-22 03:37:26,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:37:26,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 03:37:26,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803689195] [2020-08-22 03:37:26,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 03:37:26,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:26,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 03:37:26,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 03:37:26,595 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-22 03:37:27,364 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:27,707 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:27,966 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:28,202 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:28,788 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:29,355 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:29,741 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:30,701 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:30,975 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:31,354 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:31,622 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:32,201 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-22 03:37:32,747 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-22 03:37:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:33,986 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-22 03:37:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 03:37:33,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-22 03:37:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:33,994 INFO L225 Difference]: With dead ends: 2201 [2020-08-22 03:37:33,995 INFO L226 Difference]: Without dead ends: 1220 [2020-08-22 03:37:33,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 03:37:34,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-22 03:37:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-22 03:37:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-22 03:37:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-22 03:37:34,233 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-22 03:37:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:34,233 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-22 03:37:34,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 03:37:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-22 03:37:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 03:37:34,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:34,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:34,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:37:34,239 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:34,239 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-22 03:37:34,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:34,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089336041] [2020-08-22 03:37:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,516 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:37:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:37:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:37:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 03:37:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 03:37:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 03:37:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 03:37:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 03:37:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 03:37:34,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089336041] [2020-08-22 03:37:34,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:37:34,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 03:37:34,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321905924] [2020-08-22 03:37:34,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:34,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:34,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:34,692 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-22 03:37:35,628 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:37,195 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:37,893 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-22 03:37:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 03:37:37,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-22 03:37:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:37,906 INFO L225 Difference]: With dead ends: 2643 [2020-08-22 03:37:37,906 INFO L226 Difference]: Without dead ends: 1980 [2020-08-22 03:37:37,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-22 03:37:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-22 03:37:38,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-22 03:37:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-22 03:37:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-22 03:37:38,245 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-22 03:37:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:38,245 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-22 03:37:38,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-22 03:37:38,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 03:37:38,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:38,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:38,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:37:38,252 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:38,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:38,252 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-22 03:37:38,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:38,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950635931] [2020-08-22 03:37:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:37:38,324 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:37:38,325 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:37:38,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:37:38,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:37:38 BoogieIcfgContainer [2020-08-22 03:37:38,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:37:38,373 INFO L168 Benchmark]: Toolchain (without parser) took 43520.29 ms. Allocated memory was 148.4 MB in the beginning and 715.1 MB in the end (delta: 566.8 MB). Free memory was 103.8 MB in the beginning and 597.1 MB in the end (delta: -493.3 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:38,373 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:37:38,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.87 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.6 MB in the beginning and 172.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:38,375 INFO L168 Benchmark]: Boogie Preprocessor took 110.00 ms. Allocated memory is still 204.5 MB. Free memory was 172.9 MB in the beginning and 168.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:38,375 INFO L168 Benchmark]: RCFGBuilder took 1183.13 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 168.8 MB in the beginning and 196.5 MB in the end (delta: -27.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:38,376 INFO L168 Benchmark]: TraceAbstraction took 41486.06 ms. Allocated memory was 235.4 MB in the beginning and 715.1 MB in the end (delta: 479.7 MB). Free memory was 195.1 MB in the beginning and 597.1 MB in the end (delta: -402.1 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:38,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.87 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.6 MB in the beginning and 172.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.00 ms. Allocated memory is still 204.5 MB. Free memory was 172.9 MB in the beginning and 168.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1183.13 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 168.8 MB in the beginning and 196.5 MB in the end (delta: -27.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41486.06 ms. Allocated memory was 235.4 MB in the beginning and 715.1 MB in the end (delta: 479.7 MB). Free memory was 195.1 MB in the beginning and 597.1 MB in the end (delta: -402.1 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8005 SolverSat, 2017 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...